Colonial New England ancestor who traveled to Guatemala
Joseph Welch, my 5th great grandfather, was born about 1735 either in Acton or Upton Massachusetts in colonial New England. By 1756 he was living in Guatemala, where he married my 5th great grandmother. The above information has been gleaned from a matrimonial record dated June 4th 1756 from the town of San Pedro Zacapa, Zacapa, Guatemala.
I am looking for suggestions where and how to search for information (records / documents / names of vessels) of colonial New Englanders traveling to Guatemala from about 1752 to 1756.